(0 18 16)(1 13 7)(2 20 4)(3 11 5)(6 19 8)(9 14 10)(12 17 15)
ALLOWS (11/8)-SEQUENCE
1: (1 13 20)
(0 18 16)(1 4 2 20 7)(3 11 5)(6 19 8)(9 14 10)(12 17 15)(13)
2: (1 4 7)
(0 18 16)(1)(2 20 7)(3 11 5)(4)(6 19 8)(9 14 10)(12 17 15)(13)
3: (3 11 5)
(0 18 16)(1)(2 20 7)(3)(4)(5)(6 19 8)(9 14 10)(11)(12 17 15)(13)
4: (2 20 7)
(0 18 16)(1)(2)(3)(4)(5)(6 19 8)(7)(9 14 10)(11)(12 17 15)(13)(20)